When air is forced into a sheet metal manifold at high boost it will ever so slightly stretch, causing the plenum volume to increase which is good for top end power. When under low boost the sheet metal returns to its original dimensions leading to a smaller plenum volume which is better for low RPMs and torque.

DUH.

 

That's why they use aluminum in airplanes too more stretch=more lift

 

 

mine was like 1.3L IIRC.

 

Braineack and I came to a truce and I would also like to openly apologize to all the other members of the forum. This is the main forum for boost heads like us so I hope yall do not mind if I return?

Thanks,
Gregg

 

we didnt even want you to leave.

 

What is this thing?

 

looks like a mustang throttle body on a shop fab'ed plenum
or one of the GM dual TBs

 

At first i thought that TB was welded to the manifold. The welds on that TB flange are massive.

 

They were redesigning a new version. They will also do a custom design if you want.